diff --git a/src/index.ts b/src/index.ts
index 039e866..74d3eb5 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -67,11 +67,13 @@ function setRef<T, A>(this: Store<T, A>, newState: T): void {
 
 export type HookWork<T = undefined> = () => T;
 
+export type UseCustomHook<T, A, WorkR = undefined> = [T, A] | [T, A, ...WorkR[]];
+
 function useCustom<T, A, WorkR extends WorkR[] = undefined>(
   this: Store<T, A>,
   React: ReactLib,
   hookWork?: HookWork<WorkR>
-): [T, A, ...WorkR[]] {
+): UseCustomHook<T, A, WorkR> {
   const newListener = React.useState()[1];
   React.useEffect(() => {
     this.listeners.push(newListener);
@@ -130,7 +132,7 @@ const useStore = <
     actions = baseActions,
     initializer,
   }: UseStoreProps<T, InnerA, OuterA, WorkR> = {} as UseStoreProps<T, InnerA, OuterA, WorkR>
-): ((_?: HookWork<WorkR>) => [T, OuterA, ...WorkR[]]) => {
+): ((_?: HookWork<WorkR>) => UseCustomHook<T, InnerA, WorkR>) => {
   const store = { state: initialState, listeners: [] } as Store<T, OuterA>;
   store.setState = setState.bind(store);
   store.setRef = setRef.bind(store);